Support the buildings! (Reading #4)

Amira Abdalla

March 8, 2019

Professor Montgomery

ARCH 1231

In this part of the book by Ching, he explains the structural topologies of the buildings. First, he summarizes the pieces that make up the structure and their functions. For example, the vertical joists are supported by the horizontal beams which are defined by the length of the vertical parts. In order to build a strong foundation, the more rectangular the structure is the better (ratio of long to short is 1.5 : 1). Think of an X and Y axis. The horizontal beams are the X (independent) axis which define the spacing that depicts where the vertical joists Y (dependent) should be placed. Furthermore he describes a structural pattern as a grid. He defines the intersections as the location of the columns or a threshold in the design. The spaces between vertical joists define the movement spaces. And finally, any spaces present between 2 structures can be filled in with a third structure such as load bearing walls. Later on, he writes about structural stability as a series of structures working together to keep the foundation stable if joined correctly. For example, the horizontal diaphragm acts as the compression plate that tests the Braced and rigid frame to keep out any angular changes in the structure. The shear wall also acts against gravity which prevents the structure from digging into the ground. Moreover, he warns us that structures must be arranged symmetrically to avoid any distortion. With that said. He vividly explains with the use of images to help the reader visualize the meanings of his terminology.